:root {
    --clr1: #09203F;
    --clr2: #537895;
    --btn-bg: rgba(255, 255, 255, .85);
    --btn-shadow: rgba(0, 0, 0, .15);
    --input-bg: rgba(255, 255, 255, .7);
    --input-shadow: rgba(0, 0, 0, .05);
    --radius: 6px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --gap: .75rem
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0
}

body {
    font-family: var(--font);
    min-height: 100vh;
    background: linear-gradient(45deg, var(--clr1), var(--clr2));
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
    padding: 1rem
}

@keyframes gradient {
    0% {
        background-position: 0 50%
    }

    50% {
        background-position: 100% 50%
    }

    100% {
        background-position: 0 50%
    }
}

.header,
.container {
    width: min(1100px, 94vw);
    margin: 1rem auto;
    background: rgba(255, 255, 255, .311);
    backdrop-filter: blur(15px);
    border-radius: var(--radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, .08);
    padding: 1.25rem
}

.header h1 {
    text-align: center;
    margin-bottom: .35rem
}

.header p {
    text-align: center;
    opacity: .9
}

/* Tab Navigation */
.tab-nav {
    display: flex;
    gap: .5rem;
    margin-bottom: 1rem
}

.tab-btn {
    flex: 1;
    padding: .75rem 1rem;
    border: none;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, .5);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: .2s
}

.tab-btn:hover {
    background: rgba(255, 255, 255, .7)
}

.tab-btn.active {
    background: rgba(255, 255, 255, .95);
    box-shadow: 0 4px 12px rgba(0, 0, 0, .1)
}

.tab-content {
    display: none
}

.tab-content.active {
    display: block
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 220px 220px 150px;
    gap: var(--gap);
    align-items: center
}

.form-grid input,
.form-grid select {
    padding: .7rem 1rem;
    border: none;
    border-radius: var(--radius);
    background: var(--input-bg);
    box-shadow: inset 4px 4px 8px var(--input-shadow), inset -4px -4px 8px #fff
}

.form-grid button {
    background: var(--btn-bg);
    border: none;
    border-radius: var(--radius);
    padding: .7rem 1rem;
    cursor: pointer;
    box-shadow: 4px 4px 8px var(--btn-shadow), -4px -4px 8px #fff;
    transition: .2s
}

.form-grid button:hover {
    transform: translateY(-2px)
}

.form-grid select[multiple] {
    min-height: 3.2rem
}

.options {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 1rem 0
}

.options label {
    display: flex;
    align-items: center;
    gap: .5rem;
    background: rgba(255, 255, 255, .75);
    padding: .5rem .75rem;
    border-radius: 8px
}

/* Bulk Check Section */
.bulk-section {
    background: rgba(255, 255, 255, .95);
    border-radius: var(--radius);
    padding: 1.25rem
}

.bulk-section label {
    display: block;
    font-weight: 600;
    margin-bottom: .5rem
}

.bulk-section textarea {
    width: 100%;
    min-height: 180px;
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: .95rem;
    resize: vertical;
    transition: border-color .2s
}

.bulk-section textarea:focus {
    outline: none;
    border-color: var(--clr2)
}

.bulk-actions {
    display: flex;
    gap: .75rem;
    margin-top: 1rem
}

.bulk-actions button {
    padding: .75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: .2s
}

.primary-btn {
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    box-shadow: 0 4px 12px rgba(76, 175, 80, .3)
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(76, 175, 80, .4)
}

.bulk-actions button:not(.primary-btn) {
    background: var(--btn-bg);
    box-shadow: 4px 4px 8px var(--btn-shadow), -4px -4px 8px #fff
}

.bulk-hint {
    margin-top: .75rem;
    font-size: .85rem;
    color: #666
}

/* Bulk Status */
.bulk-status {
    background: rgba(255, 255, 255, .95);
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    text-align: center;
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 1.1rem
}

.bulk-status .free {
    color: #1b5e20
}

.bulk-status .taken {
    color: #b71c1c
}

.results {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
    margin-top: 1rem
}

.card {
    background: rgba(255, 255, 255, .95);
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .1);
    padding: 1rem;
    display: grid;
    gap: .5rem
}

.domain {
    font-weight: 700
}

.status {
    font-size: .9rem;
    padding: .25rem .5rem;
    border-radius: 999px;
    display: inline-block
}

.free {
    background: #e8f5e9;
    color: #1b5e20
}

.taken {
    background: #ffebee;
    color: #b71c1c
}

.actions {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap
}

.actions button {
    padding: .4rem .8rem;
    border: none;
    border-radius: 8px;
    background: var(--btn-bg);
    cursor: pointer
}

.contact {
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--btn-bg);
    padding: .6rem 1.2rem;
    border-radius: var(--radius);
    text-decoration: none;
    color: #333;
    font-weight: 700;
    box-shadow: 0 4px 12px var(--btn-shadow)
}

.upscaler {
    position: fixed;
    bottom: 1rem;
    left: 1rem;
    background: var(--btn-bg);
    padding: .6rem 1.2rem;
    border-radius: var(--radius);
    text-decoration: none;
    color: #333;
    font-weight: 700;
    box-shadow: 0 4px 12px var(--btn-shadow)
}

@media(max-width:900px) {
    .form-grid {
        grid-template-columns: 1fr 1fr;
    }

    .form-grid select[multiple] {
        grid-column: 1/3
    }
}

@media(max-width:560px) {
    .form-grid {
        grid-template-columns: 1fr
    }

    .form-grid select[multiple] {
        grid-column: auto
    }

    .tab-nav {
        flex-direction: column
    }
}